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. . . ELECTRICAL CONNECTIONS
Fig. 8b - Electrical connections
in case of Hart Communication
Fig. 8c - Optional terminal block
in case of Hart Communication
An optional terminal block
is available for the
connection of a remote
indicator.
WARNING : DO NOT ATTEMPT TO CONNECT
AN AMPEROMETRIC BETWEEN A "TEST"
TERMINAL AND A "COMM" TERMINAL. THE
RESULT TO THE POWER SUPPLY IS A SHORT
WHICH WILL BLOW FUSES AND POSSIBLY
DAMAGE YOUR EQUIPMENT, ALSO CAUSING TO
INTERRUPT FUNCTION OF OTHER DEVICES
POWERED FROM SAME SUPPLY.
NOTE: If the use of the Hand Held Communicator is
foreseen, a resistance of 250 ohms minimum must be
included in the current loop, between the power supply and
the connection point of the Hand Held Terminal, for
communication purpose.
+
+
-
-
+
+
-
-
Line load
GND
Power
source
Optional
Receiver
Test points
4-20 mA
250 ohm min
Internal ground
termination point
REMOTE
METER
Remote
indicator
Kent-Taylor
0
4
3
5
6
7
8
9
10
20
40
0
60
100
%
2
80
+
-
Hand-held
communicator
691HT
A B C
1
D E F
2
G H I
3
J K L
4
M N O
5
P Q R
6
S T U
7
V W X
8
Y Z #
9
@ %
& /
0
+
-
PV
REVIEW
SERIAL
LINK
TRIM
F1
F2
F3
F4
CONF
+
+
-
-
+
+
-
-
Line load
Internal ground
termination point
External ground
termination point
GND
Power
source
Optional
ground
Receiver
Model 691HT Communicator may be
connected at any wiring termination
point in the loop, providing the minimum
resistance is 250 ohm.
If this is less than 250 ohm, additional
resistance should be added to allow
communications.
Test points
4-20 mA
250 ohm min
Hand-held
communicator
691HT
A B C
1
D E F
2
G H I
3
J K L
4
M N O
5
P Q R
6
S T U
7
V W X
8
Y Z #
9
@ %
& /
0
+
-
PV
REVIEW
SERIAL
LINK
TRIM
F1
F2
F3
F4
CONF